Premium quality: OFC wire provides maximum conductivity, durability and antioxidation to ensure the highest performance and reliability of the products, stranding structure makes it flexible and easy to install Support 0-4A current and 0-24V voltage input, Designed for WS2812B WS2811 Dream Color LED Strip Lights Long length: 66ft(20m) led strip extension cable, meet most extend job Easy to store: Wire comes wrapped around a plastic spool, cut into any length based on needs, the rest of wire is easy to store with spool Long life: Tinned copper wire has a better anti-oxidation performance, reduce the producing of heat, which make it more durable and eco-friendly